JRE 1.4.2_02 hsperfdata_SYSTEM

Re: JRE 1.4.2_02 hsperfdata_SYST EM

In article <l8ketvcq26v62b rk20bvfiu9adq7p [email protected]>, YesBalala wrote:[color=blue]
> Since I've upgraded my Java to 1.4.2_02, I've noted that it will crate
> a subdirectory named hsperfdata_SYST EM under windows/temp and some
> Perflib_Perfdat a_xxx files as well. The problem with these files is
> that I cannot delete them (it's not own by me ...the administrator!) .
> I have a temporary file clean up utilites which tried to clean up
> windows/temp directory when I login. It failed since then. I am wonder
> why Java need these files? How can I delete them? or can I relocate
> them to somewhere else?[/color]

You should be able to disable them with the -XX:-UsePerfData flag
on the command line if you can set arbitrary command line flags.

If they are running as system then it is probably from some service
or some such, and you really shouldn't be deleting a service's
temporary files while it is running. But sincey ou don't mention
what OS you are using or what programs you are running, isn't much
anyone can say about that.

They are vastly underdocumented files that contain some very useful
performance information for developers, in particular as it relates
to garbage collection. You can view the info available through
them with the jvmstat tool from

Re: JRE 1.4.2_02 hsperfdata_SYST EM

On 11 Dec 2003 07:39:33 GMT, Marc Slemko <[email protected] > wrote:
[color=blue]
>You should be able to disable them with the -XX:-UsePerfData flag
>on the command line if you can set arbitrary command line flags.[/color]

Then, I will have to find out which service is causing it first? or,
can I set it on Java Plug-in or somewhere else?
[color=blue]
> ...But sincey ou don't mention
>what OS you are using or what programs you are running, isn't much
>anyone can say about that.[/color]

I am running Windows XP.
[color=blue]
>They are vastly underdocumented files that contain some very useful
>performance information for developers, in particular as it relates
>to garbage collection. You can view the info available through
>them with the jvmstat tool from
>http://developers.sun.com/dev/coolstuff/jvmstat/[/color]

As I am not java developer, what's the point of having these data? If
it has to be there, can I move it to somewhere else?



Bosco

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